IOP_REG_DC0       864 drivers/scsi/advansys.c #define AscReadChipDC0(port)              (ushort)inpw((port)+IOP_REG_DC0)
IOP_REG_DC0       865 drivers/scsi/advansys.c #define AscWriteChipDC0(port)             outpw((port)+IOP_REG_DC0, data)